Collapsible Plant Support

ABSTRACT

A novel collapsible plant support includes a collapsible coil adapted to rest on a flat surface. In a particular embodiment, the collapsible plant support includes a plurality of vertical support structures coupled to the collapsible coil so as to provide additional support. In another particular embodiment, a collapsible plant support includes plant receptacle receiving element that supports both a collapsible coil and also a plant receptacle. In a more particular embodiment, the plant receptacle receiving element includes fluid ducts for connecting multiple plant receptacle receiving elements into a fluid network.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates generally to gardening, and more particularly toplant support structures. Even more particularly, the invention relatesto plant support structures adapted for use on hard flat surfaces, andmore particularly still with plant receptacles (i.e. buckets).

2. Description of the Background Art

In gardening, load supporting structures are often used to provideadditional support to plants such as, for example, fruit bearing plants.Typically, such structures include a rigid grid-like structure that isplaced near, or around, a plant in the early stages of growth. As theplant matures, it grows around and/or through the structure such thatthe structure supports a significant amount of the plant's weight.

One common type of load supporting structure is the conventional tomatocage. A conventional tomato cage typically includes a cylindrical wiregrid and a plurality of relatively sharp stakes extending downwardtherefrom. The cylindrical wire grid includes a plurality of verticaland horizontal members welded together. The vertical members support thehorizontal members and the horizontal members provide support to theplant. The stakes extend downward such that the tomato cage can besecurely inserted into the soil surrounding the plant.

There are several disadvantages associated with conventional plant loadsupporting structures (e.g., a tomato cage). For example, conventionalload supporting structures are relatively bulky and, therefore,difficult to store and/or ship. As another example, they have to bestaked into the soil surrounding the plant. Consequently, conventionalplant load supporting members are susceptible to tip when the weight ofthe plant becomes too great or unbalanced. As another consequence ofhaving to be staked into the soil, conventional load supportingstructures cannot be used in situations wherein soft soil is notavailable such as, for example, when the plant is growing out of hardmediums (e.g. hydroton). As yet another consequence, many plants aregrown in pots and/or buckets where there is little room for stakes to bepressed into soil. Additionally, such pots and/or buckets typically reston hard surfaces (e.g., decks, patios, etc.), which the stakes of theplant supporting structure cannot be driven into.

In efforts to make plant supporting structures less bulky, variouscollapsible plant supporting structures have been developed. Forexample, U.S. Pat. No. 4,860,489 (Bork) discloses an adjustable plantsupport that is collapsible so that it is easier to ship and/or storethan conventional plant supporting structures. The adjustable plantsupport of Bork includes a coil that is supported by a pair of stakesthat stick into the ground. The coil is coupled to the stakes via a setof clamps that also retain the coil in a decompressed position. When notbeing pulled apart in a decompressed position by the clamps, the coilhas a natural tendency to retract in a compressed position.

Although the adjustable plant support of Bork is less bulky and easierto ship than conventional plant supporting structures, it too hasdisadvantages. For example, the adjustable plant support of Borkrequires a set of stakes to secure it to the ground. Consequently, theadjustable plant support of Bork suffers the aforementioned drawbacksassociated with stakes. As another example, the adjustable plant supportof Bork does not include vertical members that prevent horizontalmovement of the plant.

What is needed, therefore, is a plant supporting structure that does notneed to be staked to the ground. What is also needed is a plantsupporting structure that provides horizontal support to plants. What isalso needed is a plant support structure that can be used on hard and/orimpenetrable surfaces.

SUMMARY

The present invention overcomes the problems associated with the priorart by providing a collapsible plant support structure. The inventionfacilitates the support of growing plants on hard or impenetrablesurfaces. The support structure can be used on hard, flat surfaces andis collapsible for easy, compact storage.

An example collapsible plant support structure includes a collapsiblecoil, a bottom, and a plurality of retainers. The collapsible coil hasan axis, a bottom end and a top end. The bottom is coupled to the bottomend of the collapsible coil and adapted to support the collapsible plantsupport on a flat horizontal surface with the axis perpendicular to theflat horizontal surface. The retainers are coupled to the bottom end ofthe collapsible coil and the top end of the collapsible coil, and areadapted to restrain the collapsible coil in a deployed position.

In an example embodiment, the plurality of retainers includes aplurality of vertical support structures, which remain entirely at orabove the bottom of the collapsible plant support structure. Optionally,portions of the vertical support structures form at least a portion ofthe bottom of the collapsible plant support structure.

In example embodiments, each of the plurality of the support structuresincludes a first coil engaging feature, a second coil engaging feature,and a rigid member coupled between the first coil engaging feature andthe second coil engaging feature. The first coil engaging feature isadapted to engage a portion of the collapsible coil at the top end ofthe collapsible coil, and the second coil engaging feature adapted toengage a portion of the collapsible coil at the bottom end of thecollapsible coil. Optionally, the rigid members include a plurality ofintermediate coil engaging features adapted to engage turns of thecollapsible coil between the top end of the collapsible coil and thebottom of the collapsible coil. In one of the example embodiments, thecollapsible coil tends to expand beyond the deployed position, and thesupport structures restrain the collapsible coil from expansion beyondthe deployed position. In another of the example embodiments, thecollapsible coil tends to contract from the deployed position, and thesupport structures restrain the collapsible coil from contracting fromthe deployed position.

In other disclosed embodiments, the collapsible plant support structureincludes a plurality of vertical support engaging structures fixed tothe collapsible coil. For example, a first set of vertical supportstructure engaging devices is coupled to the top end of the collapsiblecoil, each device being adapted to engage a top end of a respective oneof the vertical support structures. In addition, a second set ofvertical support structure engaging features is coupled to the bottomend of the collapsible coil, each device being adapted to engage abottom end of a respective one of the vertical support structures.

In some example embodiments, in addition to or instead of the verticalsupports, the plurality of retainers includes a plurality of flexibleelements coupled between the bottom end of the collapsible coil and thetop end of the collapsible coil. In one such embodiment, the collapsiblecoil includes a plurality of helical turns, and at least one of theflexible elements is coupled to the bottom end of the collapsible coil,the top end of the collapsible coil, and every helical turntherebetween. In one such embodiment, each of the plurality of flexibleelements is a cord (e.g., string, rope, braided wire, etc.).

In some of the example embodiments, the bottom end of the collapsiblecoil forms at least a portion of the bottom of the collapsible plantsupport structure. For example, several winds of the coil can be boundtogether to form a flat, circular bottom. Optionally, the inner diameterof the collapsible coil is greater than 12 inches, to accommodate theplacement of a plant receptacle (e.g., a pot, five gallon bucket, etc.).

Optionally, the bottom of the collapsible plant support structureincludes a base coupled to the bottom end of the collapsible coil. Insome embodiments, the base is a rigid structure, whereby the collapsibleplant support is stabilized by weight (e.g., a potted plant) placed onthe base. Examples of a rigid base include, but are not limited to, abar, a plate, and a pan. In other embodiments, the base is a flexiblestructure (e.g., a cord, a strap, etc.) coupled across the bottom end ofthe collapsible coil, whereby the collapsible plant support isstabilized by weight placed on the base.

In another example embodiment, a collapsible plant support structureincludes a collapsible coil, a bottom, a plurality of vertical flexibleelements, a plurality of vertical supports, and a plurality of coilengaging features. The collapsible coil has an axis, a bottom end and atop end. The bottom of the plant support structure is coupled to thebottom end of the collapsible coil and is adapted to support thecollapsible plant support on a flat, horizontal surface with the axisperpendicular to the flat, horizontal surface. The vertical flexibleelements are each coupled to the bottom end of the collapsible coil, thetop end of the collapsible coil, and intermediate turns of thecollapsible coil. The vertical supports are adapted to restrain thecollapsible coil in a deployed position. The coil engaging features areadapted to couple the vertical supports to the collapsible coil.Optionally, the plant support structure additionally includes a flexiblecovering molded around the collapsible coil. The vertical flexibleelements and the coil engaging features are also molded onto thecollapsible coil.

A method of manufacturing a collapsible plant support structure is alsodisclosed. The method includes providing a collapsible coil having anaxis, a bottom end and a top end. The method additionally includesmolding a plurality of vertical flexible elements to the bottom end ofthe collapsible coil, the top end of the collapsible coil, andintermediate turns of the collapsible coil. A plurality of verticalsupports adapted to restrain the collapsible coil in a deployed positionis provided, and the method additionally includes molding a plurality ofcoil engaging features onto the collapsible coil. The coil engagingfeatures are adapted to couple the vertical supports to the collapsiblecoil. In a particular example method, the vertical flexible elements andthe coil engaging features are molded in a single molding process.Optionally, a flexible covering can be molded around the collapsiblecoil as part of the single molding process.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is described with reference to the followingdrawings, wherein like reference numbers denote substantially similarelements:

FIG. 1 is a perspective view of a plant support structure positionedaround a bucket;

FIG. 2 is a perspective view of the plant support structure of FIG. 1;

FIG. 3 is a perspective view of a plant support structure according toanother embodiment of the present invention;

FIG. 4 is a perspective view of a plant support structure according toanother embodiment of the present invention;

FIG. 5 is a perspective view of a plant support structure according toanother embodiment of the present invention;

FIG. 6 is a perspective view of a plant support structure according toanother embodiment of the present invention;

FIG. 7 is a perspective view of the plant support structure of FIG. 3according to another embodiment of the present invention;

FIG. 8 is a side view of a plant support structure according to anotherembodiment of the present invention;

FIG. 9 is a side view of a plant support structure according to anotherembodiment of the present invention;

FIG. 10 is a side view of a plant support structure according to anotherembodiment of the present invention;

FIG. 11 is a perspective view of a vertical support structure of theplant support structure of FIG. 10.

FIG. 12 is a perspective view of a plant support structure according toanother embodiment of the present invention;

FIG. 13 is a perspective view of the plant support structure of FIG. 4according to another embodiment of the present invention;

FIG. 14 is a perspective view of a plant support structure according toanother embodiment of the present invention;

FIG. 15 is a cross-sectional side view of a plant receptacle receivingelement of the plant support structure of FIG. 1400;

FIG. 16 is a cross-sectional view of a plant receptacle receivingelement according to another embodiment of the present invention;

FIG. 17 is a perspective view of a collapsible vertical supportstructure according to another embodiment of the present invention; and

FIG. 18 is a top view of an array of plant receptacle receivingelements;

FIG. 19A is a perspective view of an insert mold in an open position;

FIG. 19B is a perspective view of the insert mold of FIG. 19A in aclosed position;

FIG. 19C is a perspective view of a collapsible plant support structureformed in the mold of FIG. 19A;

FIG. 20 is a perspective view of a section of the collapsible plantsupport structure of FIG. 19C; and

FIG. 21 is a side view of a collapsible plant support structureaccording to another embodiment of the present invention.

DETAILED DESCRIPTION

The present invention overcomes the problems associated with the priorart, by providing a collapsible plant support structure that is adaptedto rest on a substantially flat surface. In the following description,numerous specific details are set forth (e.g., number of coils, types ofvertical support structures, etc.) in order to provide a thoroughunderstanding of the invention. Those skilled in the art will recognize,however, that the invention may be practiced apart from these specificdetails. In other instances, details of well-known coil manufacturingpractices (e.g., wire extrusion, wire bending/welding, etc.) andcomponents have been omitted, so as not to unnecessarily obscure thepresent invention.

FIG. 1 shows perspective view of a collapsible plant support structure100 having a bucket 102 disposed therein. Plant support structure 100 isoperative to provide additional support to plants growing out of bucket102. As shown, plant support structure 100 is adapted to rest on a flatsurface on which bucket 102 is also supported. This is particularlyadvantageous in scenarios such as, for example, when using bucket 102 togrow plants indoors wherein plant support structure 100 and bucket 102would rest on a floor. Unlike prior art plant supports, collapsibleplant support structure 100 does not require being staked intounderlying soil. That is, plant support structure 100 is self-supportingon planar surfaces.

FIG. 2 shows a perspective view of collapsible plant support structure100 in an open (deployed) position. In this particular embodiment,collapsible plant support structure 100 includes a collapsible coil 200and plurality of vertical structures 202 coupled thereto. Collapsiblecoil 200 is essentially a large metal wire coil having a somewhat lowresistance to compression such that it can be easily compressed to avery small size during shipping and/or storage. Of course, coil 200 alsohas a resistance to compression sufficient to support plants withoutcollapsing. Coil 200 includes a bottom region 204 and an opposite topregion 206. Bottom region 204 is defined by a portion of coil 200 thatis wound in a plane such that bottom region 204 is adapted to rest on aflat surface (i.e. floor). In this example, vertical structures 202 areoperative to limit horizontal movement of plant branches extending outof collapsible plant support structure 100. This is beneficial in thatthe weight of the plant is more evenly distributed about collapsibleplant support structure 100 when branches are not free to movehorizontally. In this example, vertical structures 202 are formed fromindividual pieces of string that are each tied into knots 208 attachedto both bottom region 204 and top region 206. Although each piece ofstring is tied to coil 200 with two knots 208, each of verticalstructures 202 could be tied to each turn of coil 200 to further limitrelative horizontal movement between vertical structures 202 and coil200. In other words, each contact point between coil 200 and verticalstructures 202 would be coupled via a knot.

In this embodiment, vertical structures 202 also serve as retainers,because they prevent coil 200 from expanding beyond its intendeddeployed position. In other words, vertical structures 202 restrain coil202 in its deployed position.

FIG. 3 shows a perspective view of a collapsible plant support structure300 according to another embodiment of the present invention. Plantsupport structure 300 provides additional support to plants, beyond thatwhich would be provided by the previous embodiment. Plant supportstructure 300 includes a collapsible coil 302, a plurality of verticalstructures 304, and a plurality of vertical support structures 306.Collapsible coil 302 is substantially similar to coil 200 in that theonly difference is that coil 302 is naturally in a collapsed state whennot being held open by vertical support structures 306. In other words,coil 200 (FIG. 2) is naturally open tends toward expansion), but has tobe secured in a collapsed position during storage. In contrast, coil 302is naturally in a collapsed position (tends toward contraction), butrequires being held open by vertical support structures 306 duringoperation. Thus, vertical support structures 306 serve as retainers,restraining coil 302 in a deployed position.

Coil 302 includes a bottom region 308 and an opposite top region 310.Bottom region 308 is defined by a portion of coil 302 that is wound in aplane such that bottom region 308 is adapted to rest on a flat surface(i.e. floor). In this example, vertical structures 304 are operative tolimit horizontal movement of plant branches extending out of collapsibleplant support structure 300. This is beneficial in that the weight ofthe plant is more evenly distributed about collapsible plant supportstructure 300 when branches are not free to move horizontally. In thisexample, vertical structures 304 are formed from individual pieces ofstring that are each tied into knots 312 attached to both bottom region308 and top region 310.

Each of vertical support structures 306 includes two coil engagingfeatures 314 and a columnar structure 316 disposed therebetween. In thisexample, coil engaging features 314 are plastic elbow couplings having afirst end 318 coupled to coil 302 and a second end 320 coupled to arespective one of columnar structures 316. Each first end 318 of coilengaging features 314 includes an aperture 322 through which coil 302 isdisposed. Each second end 320 is friction fit to a respective end of arespective one of columnar structures 316. Each of columnar structures316 is a rigid pole or tube formed from some suitable material such as,for example, plastic, wood, fiberglass, etc. The rigidity and strengthof columnar structures 316 is such that they do not buckle under thespring force of coil 302 and the weight of a plant growing out ofcollapsible plant support structure 300. In addition to providingvertical support, columnar structures 316 also provide horizontalsupport to plants growing from plant support structure 300. Collapsibleplant support structure 300 can be stored simply by sliding columnarstructures out of second ends 320 of coil engaging features 314. Withcoil engaging features 314 removed, coil 302 collapses down into a smallform factor for storage, shipping, etc.

FIG. 4 shows a perspective view of a collapsible plant support structure400 according to another embodiment of the present invention. Plantsupport structure 400 is operative to provide additional support toplants. Plant support structure 400 includes a collapsible coil 402, aplurality of vertical structures 404, and a plurality of verticalsupport structures 406. Collapsible coil 402 is substantially similar tocoil 302 in that it is naturally in a collapsed state when not beingheld open by vertical support structures 406. Coil 402 includes a bottomregion 408 and an opposite top region 410. Bottom region 408 is definedby a portion of coil 402 that is wound in a plane such that bottomregion 408 is adapted to rest on a flat surface. In this example,vertical structures 404 are operative to limit horizontal movement ofplant branches extending out of collapsible plant support structure 400,as in the previously described embodiment.

Each of vertical support structures 306 includes two coil engagingfeatures 414 and a columnar structure 416 disposed therebetween. In thisexample, coil engaging features 414 are tubular rigid female couplingsattached to coil 402 by some suitable means such as, for example, a tackweld. Each of coil engaging features 414 includes an open end 418adapted to receive a respective end of a respective one of columnarstructures 416. Each open end 418 is friction fit around a respectiveend of a respective one of columnar structures 416. Each of columnarstructures 416 is a rigid pole or tube formed from some suitablematerial such as, for example, plastic, wood, fiberglass, etc. Therigidity and strength of columnar structures 416 is such that they donot buckle under the spring force of coil 402 and the weight of a plantgrowing out of collapsible plant support structure 400. In addition toproviding vertical support, columnar structures 416 also providehorizontal support to plants growing from plant support structure 400.Collapsible plant support structure 400 can be stored simply by slidingcolumnar structures 416 out of open ends 418 of coil engaging features414. With coil engaging features 414 removed, coil 402 collapses downinto a small form factor for storage, shipping, etc.

FIG. 5 shows a perspective view of a collapsible plant support structure500 according to another embodiment of the present invention. Plantsupport structure 500 includes a collapsible coil 502, a plurality ofvertical structures 504, and a plurality of vertical support structures506. Collapsible coil 502 is substantially similar to coils 302 and 402in that it is naturally in a collapsed state when not being held open byvertical support structures 506. Coil 502 includes a bottom region 508and an opposite top region 510. Bottom region 508 is defined by aportion of coil 502 that is wound in a plane such that bottom region 508is adapted to rest on a flat surface. In this example, verticalstructures 504 limit horizontal movement of plant branches extending outof collapsible plant support structure 500, as in the embodimentsdescribed above.

Each of vertical support structures 506 includes two coil engagingfeatures 514 and a columnar structure 516 disposed therebetween. In thisexample, coil engaging features 514 are solid wire protrusions attachedto coil 502 by some suitable means such as, for example, a tack weld.Each of coil engaging features 514 is adapted to be inserted into arespective open end 518 of a respective one of columnar structures 516.Each of columnar structures 516 is a rigid tube formed from somesuitable material such as, for example, plastic, metal, fiberglass, etc.The rigidity and strength of columnar structures 516 is such that theydo not buckle under the spring force of coil 502 and the weight of aplant growing out of collapsible plant support structure 500. Inaddition to providing vertical support, columnar structures 516 alsoprovide horizontal support to plants growing from plant supportstructure 500. Collapsible plant support structure 500 can be storedsimply by sliding coil engaging features 514 out of open ends 518 ofcolumnar structures 516. With coil engaging features 514 removed, coil502 collapses down into a small form factor for storage, shipping, etc.

FIG. 6 shows a perspective view of a collapsible plant support structure600 according to another embodiment of the present invention. Plantsupport structure 600 provides additional support to plants as well aspreventing water and/or soil from falling onto the underlying floor. Inaddition, plant support structure 600 derives additional stability fromthe weight of a potted plant (not shown) placed with plant supportstructure 600. Plant support structure 600 includes a collapsible coil602, a plurality of vertical structures 604, a plurality of verticalsupport structures 606, and a plant receptacle receiving element 608.

Collapsible coil 602 is substantially similar to coils 302, 402, and 502in that it is naturally in a collapsed state when not being held open byvertical support structures 606. Coil 602 includes a bottom region 610and an opposite top region 612. Bottom region 610 is defined by aportion of coil 602 that is wound in a plane such that bottom region 610is adapted to rest on a flat surface. Optionally, the bottom region 610of coil 602 can be rigidly fastened to plant receptacle receivingelement 608. Vertical structures 604 limit horizontal movement of plantbranches extending out of collapsible plant support structure 600.

Each of vertical support structures 606 includes a first coil engagingfeature 616, columnar structure engaging feature 618, and a columnarstructure 620 disposed therebetween. In this example, each of first coilengaging features 616 is a tubular rigid female couplings attached totop region 612 of coil 602. Each of first coil engaging features 616includes an open end 622 adapted to receive a respective bottom end of arespective one of columnar structures 620. Each of columnar structureengaging feature 618 is a tubular rigid female couplings attached toplant receptacle receiving element 608 (stabilizing base). Each ofcolumnar structure engaging features 618 include an open end 624 adaptedto receive a respective bottom end of a respective one of columnarstructures 620. Each of columnar structures 620 is a rigid pole or tubeformed from some suitable material such as, for example, plastic, wood,fiberglass, etc. The rigidity and strength of columnar structures 620 issuch that they do not buckle under the spring force of coil 602 and theweight of a plant growing out of collapsible plant support structure600. In addition to providing vertical support, columnar structures 620also provide horizontal support to plants growing from plant supportstructure 600.

Plant receptacle receiving element 608 is, for example, a rigid panhaving bottom wall 626 and a cylindrical sidewall 628 extending upwardtherefrom. As shown, columnar structure engaging features 618 arerigidly attached to the inside of cylindrical sidewall 628. Plantreceptacle receiving element 608 provides several advantages includingpreventing soil and/or water from falling onto the underlying floor. Asanother example advantage, plant receptacle receiving element 608prevents coil 602 from tipping because the weight of the bucket rests onbottom wall 626, thereby providing a stabilizing base for collapsibleplant support structure 600.

Although not shown, the vertical height of cylindrical sidewall 628 canbe tall enough that coil 602 can be collapsed completely inside of plantreceptacle receiving element 608. This is beneficial in that severalcollapsible plant support structures 600 can be stacked efficiently whenpackaged or just when being stored and/or shipped. In other words, whenin the collapsed position, collapsible plant support structure 600 wouldhave the same form factor as plant receptacle receiving element 608.Furthermore, columnar structures 620 can be collapsible so that each ofcolumnar structures 620 could also be stored in plant receptaclereceiving element 608 during storage and/or shipping of collapsibleplant support structure 600.

FIG. 7 shows a perspective view of collapsible plant support structure300 (FIG. 3) in combination with a stabilizing base. In in particular,plant support structure 300 is fixed to a plant receptacle receivingelement 700. In this example, plant receptacle receiving element 700 isa flat plate that is coupled to bottom region 308 of coil 302 via a setof fasteners 702 (e.g., zip-tie, metal wire, etc.). Optionally, element700 can be directly fixed to bottom region 308 of coil 302 by, forexample, welding or an adhesive. During use, a plant receptacle (i.e.bucket) rests on plant receptacle receiving element 700, which providesstability to plant support structure 300. Indeed, plant supportstructure 300 is much more difficult to tip under the weight of a plantwhen the weight of the plant receptacle is resting on plant receptaclereceiving element 700. Plant receptacle receiving element 700 can beconstructed out of any suitable material including, but not limited to,wood, plastic, and/or metal, that is capable of transferring weight froma potted plant to the bottom region 308 of coil 302.

FIG. 8 shows a side view of a collapsible plant support structure 800according to another embodiment of the present invention. Plant supportstructure 800 includes a collapsible coil 802, a plurality of verticalstructures 804, and a plurality of vertical support structures 806.Collapsible coil 802 is substantially similar to coils 302, 402, 502,and 602 in that it is naturally in a collapsed state when not being heldopen by vertical support structures 806. Coil 802 includes a bottomregion 808 and an opposite top region 810. Bottom region 808 is definedby a portion of coil 802 that is wound in a plane. Vertical structures804 are formed from individual pieces of string that are each tied intoknots 812 attached to both bottom region 808 and top region 810. Each ofvertical support structures 806 includes two coil engaging features 814and a columnar structure 816 disposed therebetween. In this example,coil engaging features 814 are outward facing hooks that engage bothbottom region 808 and top region 810 of coil 802. Each of columnarstructures 816 is a rigid column structure formed from some suitablematerial such as, for example, plastic, metal, fiberglass, wood, etc.Collapsible plant support structure 800 can be broken down for storagesimply by disengaging bottom region 808 and top region 810 from coilengaging features 814. With coil engaging features 814 disengaged, coil802 collapses down into a small form factor for storage, shipping, etc.

FIG. 9 shows a side view of a collapsible plant support structure 900according to another embodiment of the present invention. Plant supportstructure 900 includes a collapsible coil 902, a plurality of verticalstructures 904, and a plurality of vertical support structures 906.Collapsible coil 902 is substantially similar to coil 200 in that it isnaturally in an open position when not engaged by vertical supportstructures 906. Coil 902 includes a bottom region 908 and an oppositetop region 910. Bottom region 908 is defined by a portion of coil 902that is wound in a plane. Vertical structures 904 are formed fromindividual pieces of string that are each tied into knots 912 attachedto both bottom region 908 and top region 910. Each of vertical supportstructures 906 includes two coil engaging features 914 and a columnarstructure 916 disposed therebetween. In this example, coil engagingfeatures 914 are inward facing hooks that engage both bottom region 908and top region 910 of coil 902. Each of columnar structures 916 is arigid column structure. Collapsible plant support structure 900 can bebroken down for storage simply by disengaging bottom region 908 and topregion 910 from coil engaging features 914, compressing coil 902, andthen fastening coil 902 in a compressed position by some suitable meanssuch as hook-and-loop fasteners.

FIG. 10 shows a side view of a collapsible plant support structure 1000according to another embodiment of the present invention. Plant supportstructure 1000 includes a collapsible coil 1002, a plurality of verticalstructures 1004, and a plurality of vertical support structures 1006.Collapsible coil 1002 includes a bottom region 1008 and an opposite topregion 1010. Bottom region 1008 is defined by a portion of coil 1002that is wound in a plane. Vertical structures 1004 are formed fromindividual pieces of string that are each tied into knots 1012 attachedto both bottom region 1008 and top region 1010. Each of vertical supportstructures 1006 is removably coupled to coil 1002 and restrains coil1002 in a deployed position.

FIG. 11 shows a perspective view of a portion of one of vertical supportstructures 1006 removed from coil 1002. As shown, each of verticalsupport structures 1006 is a columnar structure having a plurality ofcoil engaging features 1100 formed therein. Coil engaging features 1100are notches contoured to engage coil 1002 at multiple locations,including the top, bottom, and intermediate turns of coil 1002. Whencoil 1002 is engaged within coil engaging features 1100, coil 1002 isnot free to move in the vertical direction. Therefore, the natural stateof coil 1002 (either compressed or open) is irrelevant to the design ofplant support structure 1000. Indeed, coil 1002 can be of either anaturally compressed or naturally decompressed type.

FIG. 12 shows a perspective view of a collapsible plant supportstructure 1200 according to another embodiment of the present invention.Plant support structure 1200 includes a collapsible coil 1202, aplurality of vertical structures 1204, and a plurality of verticalsupport structures 1206. Collapsible coil 1202 is substantially similarto coils 302, 402, 502, 602, and 802 in that it is naturally in acollapsed position when not engaged by vertical support structures 1206.Coil 1202 includes a bottom region 1208 and an opposite top region 1210.Bottom region 1208 is defined by a portion of coil 1202 that is wound ina plane.

Vertical structures 1204 are formed from individual pieces of stringthat are each tied into knots 1212 attached to both bottom region 1208and top region 1210.

Each of vertical support structures 1206 includes two coil engagingfeatures 1214, a columnar structure 1216, and a plurality of annularelements 1218. In this example, coil engaging features 1214 arecylindrical end caps attached to bottom region 1208 and top region 1210of coil 1202 by some suitable means (e.g. spot weld). Each of coilengaging features 1214 is adapted to receive a respective end of arespective one of columnar structures 1216. Each of columnar structures1216 is a rigid column structure held in place by the natural tendencyof coil 1202 to compress. Each annular element 1218 is adapted toslidably engage the exterior surface of columnar structures 1216.Furthermore, each of annular elements is a metal ring attached to coil1202 by some suitable means such as, for example, a tack weld. Annularelements 1218 increase the number of inflection points of columnarstructures 1216 thereby substantially increasing the force columnarstructure 1216 is capable of supporting before buckling. Collapsibleplant support structure 1200 can be broken down for storage simply byremoving columnar structures 1216 from coil engaging features 1214 andsliding them out of annular elements 1218. With columnar structures 1216removed, coil 1202 is able to compress thereby having a substantiallysmaller form factor.

FIG. 13 shows a perspective view of collapsible plant support structure410 (FIG. 4) in combination with another feature of the presentinvention. In this example, plant support structure 410 additionallyincludes a grid structure 1300 coupled to top region 410 of coil 402.Grid structure 1300 is a removable structure that can be optionally usedto provide additional support to both plant support structure 410 andplants growing therefrom. Grid structure 1300 can be formed a variety ofdifferent ways. For example, grid structure 1300 can be a wire meshstructure or a grid of elastic cords.

FIG. 14 shows a perspective view of a collapsible plant supportstructure 1400 according to another embodiment of the present invention.Plant support structure 1400 includes a collapsible coil 1402, aplurality of vertical structures 1404, a plurality of vertical supportstructures 1406, and a plant receptacle receiving element 1408.

Collapsible coil 1402 is substantially similar to coils 302, 402, 502,602, 802, and 1202 in that it is naturally in a collapsed state when notbeing held open by vertical support structures 1406. Coil 1402 includesa bottom region 1410 and an opposite top region 1412. Bottom region 1410is defined by a portion of coil 1402 that is wound in a plane such thatbottom region 1410 is adapted to rest on a flat surface.

In this example, vertical structures 1404 are formed from individualpieces of string that are each tied into knots 1414 attached to bothbottom region 1410 and top region 1412.

Each of vertical support structures 1406 includes a first coil engagingfeature 1416, a second coil engaging feature 1418, and a columnarstructure 1420 disposed therebetween. In this example, each of firstcoil engaging features 1416 is a tubular rigid female couplings attachedto top region 1412 of coil 1402. Each of first coil engaging features1416 includes an open end 1422 adapted to receive a respective top endof a respective one of columnar structures 1420. Each of second coilengaging features 1418 is a tubular rigid female couplings attached tobottom region 1410 of coil 1402. Each of second coil engaging features1418 includes an open end 1424 that is adapted to receive a respectivebottom end of a respective one of columnar structures 1420. Each ofsecond coil engaging features 1418 is also adapted to fit into arespective set of cylindrical apertures 1426 formed in plant receptaclereceiving element 1408.

Plant receptacle receiving element (stabilizing base) 1408 is, forexample, a molded plastic structure that includes a flat surface 1428,an annular channel 1430, a sidewall 1432, a pitched surface 1434, adrain duct 1436, and a watering duct network 1438. Flat surface 1428 isadapted to support a plant receiving receptacle such as, for example, abucket. Annular channel 1430 is adapted to seat bottom region 1410 ofcoil 1402 therein. Sidewall 1432 extends upward and defines apertures1426. Pitched surface 1434 enables water that falls onto plantreceptacle receiving element 1408 to move to drain duct 1436. Drain duct1436 includes an inlet 1440 and an outlet 1442 formed on pitched surface1434 and sidewall 1432, respectively. Watering duct network 1438 enablesmultiple plant receptacle receiving elements 1408 to be connected to asingle water source or any desirable fluid network.

FIG. 15 shows a cross-sectional side view of plant receptacle receivingelement 1408. As shown, apertures 1426 extend only partially into plantreceptacle receiving element 1408 so as to support vertical supportstructures 1406 in an upright position. Watering duct network 1438 isformed from two perpendicular ducts passing entirely through plantreceptacle receiving element 1408.

FIG. 16 shows a cross-sectional side view of plant receptacle receivingelement 1600 according to an alternate embodiment of the presentinvention. The features of plant receptacle receiving element 1600 aresubstantially similar to plant receptacle receiving element 1408.Therefore, features of plant receptacle receiving element 1600 that aresubstantially identical to those of plant receptacle receiving element1408 will we referenced with like numbers. The only difference betweenplant receiving element 1600 and 1408 is that receptacle receivingelement 1600 includes a sidewall 1602 that is much taller than sidewall1432. The height of sidewall 1602 is such that a coil 1604 can fitentirely within the form factor of plant receptacle receiving element1600 when collapsed. This is particularly desirable in that itfacilitates convenient storage and/or stackability of a collapsibleplant support structure.

FIG. 17 shows a perspective view of a columnar support structure 1700that is capable supporting coil 1604. Columnar support structure 1700can be collapsed down to fit within the form factor of plant receptaclereceiving element 1600. As shown, columnar support structure 1700includes three discrete tubular sections 1702 friction fit together viatubular couplings 1704. Columnar support structure 1700 further includesan elastic cord 1706 disposed in sections 1702 so as to prevent sections1702 from being disconnected. Columnar support structure 1700 can alsobe substituted for the column support structures of previously describedembodiments.

FIG. 18 shows a top view of an array 1800 of plant receptacle receivingelements 1408 _(1,1) through 1408 _(3,3) connected to form a fluidnetwork. As shown, each watering duct network 1438 of respective plantreceptacle receiving elements 1408 includes a top port 1802, a left port1804, a right port 1806, and a bottom port 1808.

In this example, water is supplied to array 1800 through a single watersource 1810 coupled to top port 1802 of plant receptacle receivingelement 1408 _(1,1). Left port 1804 of plant receptacle receivingelements 1408 _(1,1) is closed via a plug 1812. Right port 1804 of plantreceptacle receiving element 1408 _(1,1) is coupled to a T-coupling 1814so as to supply water to both a watering outlet 1816 of plant receptaclereceiving element 1408 _(1,1) and also to left port 1804 of plantreceptacle receiving element 1408 _(2,1). Bottom port 1808 supplieswater directly to top port 1802 of plant receptacle receiving element1408 _(1,2).

Top port 1802 of plant receptacle receiving element 1408 _(1,2) receiveswater supplied by bottom port 1808 of plant receptacle receiving element1408 _(1,1). Left port 1804 of plant receptacle receiving elements 1408_(1,2) is closed via a plug 1812. Right port 1804 of plant receptaclereceiving element 1408 _(1,2) is coupled to a T-coupling 1814 so as tosupply water to both a watering outlet 1816 of plant receptaclereceiving element 1408 _(1,2) and also to left port 1804 of plantreceptacle receiving element 1408 _(2,2). Bottom port 1808 of plantreceptacle receiving element 1408 _(1,2) is closed via a plug 1812.However, bottom port 1808 of plant receptacle receiving element 1408_(1,2) could also be coupled to supply water to another plant receptaclereceiving element 1408.

Top port 1802 of plant receptacle receiving element 1408 _(2,1) isclosed via a plug 1812. Left port 1804 of plant receptacle receivingelements 1408 _(2,1) receives water supplied by right port 1806 of plantreceiving element 1408 _(1,1) through T-coupling 1814. Right port 1804of plant receptacle receiving element 1408 _(2,1) supplies water to awatering outlet 1816 of plant receptacle receiving element 1408 _(2,1).Optionally, right port 1804 could be coupled to a T-coupling so as tosupply water to yet another plant receptacle receiving element 1408.Bottom port 1808 of plant receptacle receiving element 1408 _(2,1) iscoupled directly to top port 1802 of plant receptacle receiving element1408 _(2,2).

Top port 1802 of plant receptacle receiving element 1408 _(2,2) receiveswater supplied by bottom port 1808 of plant receptacle receiving element1408 _(2,1). Left port 1804 of plant receptacle receiving elements 1408_(2,2) receives water supplied by right port 1806 of plant receptaclereceiving element 1408 _(1,2) indirectly through a T-coupling 1814.Right port 1804 of plant receptacle receiving element 1408 _(2,2)supplies water to a watering outlet 1816 of plant receptacle receivingelement 1408 _(2,2). Optionally, right port 1804 of plant receptaclereceiving element 1408 _(2,2) could be coupled to a T-coupling so as tosupply water to yet another plant receptacle receiving element 1408.Bottom port 1808 of plant receptacle receiving element 1408 _(2,2) isclosed via a plug 1812. However, bottom port 1808 of plant receptaclereceiving element 1408 _(2,2) could also be coupled to supply water toanother plant receptacle receiving element 1408. Indeed, number andlayout of plant receptacle receiving elements 1408 can be arrangedaccording to user preference and water supply parameters (i.g.,pressure, flow rate, etc.).

The manufacturing of a collapsible plant support structure 1900 isdescribed as follows with reference to FIGS. 19A, 19B, and 19C.

In a first step illustrated in FIG. 19A, an insert mold 1902 isprovided. Insert mold 1902 includes a center 1904 and two sides 1906.Mold center 1904 includes an exterior surface 1908 defining a helicalchannel 1910, a set of vertical channels 1912, and a set ring cavities1914. Similarly, mold sides 1906 include interior surfaces 1916 eachdefining a complimentary helical channel 1918, a complimentary set ofvertical channels 1920, and a complimentary set of ring cavities 1922.

In a second step, a metal coil 1924 (shown in FIG. 20) is placed intomold 1902 as an insert. That is, coil 1924 is seated in helical channel1910 of mold center 1904.

In a third step, depicted in FIG. 19B, mold 1902 is closed with coil1924 seated in helical channel 1910. When mold 1902 is closed, helicalchannel 1910 and complimentary helical channel 1918 form a helicalcavity that has an inner diameter slightly larger than the outerdiameter of coil 1924. When resin in injected into the helical cavityformed by helical channel 1910 and complimentary helical channel 1918, aresin shell 1926 (shown in FIG. 19C and FIG. 20) is formed around coil1924. Furthermore, when mold 1902 is closed, vertical channels 1912 and1920 align to form four vertical bores that intersect the helical cavityformed by helical channels 1912 and 1918. When resin (e.g., rubber,plastic, etc.) is injected into the vertical bores formed by verticalchannels 1912 and 1920, vertical structures 1928 (shown in FIG. 19C)attached to shell 1926 are formed. When mold 1902 is closed, ringcavities 1914 and complimentary ring cavities 1922 also align to form aring shaped cavity. When resin is injected into the ring shapedcavities, a plurality of ring features 1930 (shown in FIG. 19C and FIG.20) are integrally formed on resin shell 1926.

Once the injected resin is sufficiently cooled, mold 1902 is opened andcollapsible plant support 1900 (shown in FIG. 19C) is removed from moldcenter 1904. Collapsible plant support 1900 includes resin coated metalcoil 1924, a plurality vertical structures 1928 composed of resin, and aplurality of ring features 1930 composed of resin.

The functionality of collapsible plant support structure 1900 issubstantially similar to that of collapsible plant support structure1200. Therefore, redundant descriptions of plant support structure 1900and like components are not provided for the sake of brevity. Althoughnot shown, collapsible plant support structure 1900 also includes fourvertical support structures 1216 to hold collapsible plant supportstructure 1900 in an open position. Depending on the type of supportstructures used, additional coil engaging features (not shown) can beprovided by mold 1902.

Although not shown, fold lines or features can be molded into verticalstructures 1928 (e.g., halfway between each turn of coil 1924). The foldlines effectively cause each intermediate region of vertical structures1928 between each turn of coil 1924 to collapse inward when coil 1924 iscollapsed downward.

FIG. 20 shows a perspective view of a section 2000 of collapsible plantsupport structure 1900. As shown, section 2000 include a section ofmetal coil 1924 having a resin shell 1926 and a resin ring feature 1930formed thereon. Resin ring feature 1930 is adapted to slidably engagethe exterior surface of a vertical support structure 1216 or the like.

FIG. 21 shows a side view of a collapsible plant support structure 2100according to another embodiment of the present invention. Plant supportstructure 2100 includes a plurality of discrete rigid rings 2102, aplurality of vertical structures 1204, and a plurality of verticalsupport structures 1206. The bottom one of rings 2102 defines a bottomregion 2108 and an opposite top one of rings 2102 defines a top region2110 of collapsible plant support structure 2100. Vertical structures2104 are formed from individual pieces of cord that are each tied intoknots 2112 attached to each of rings 2102. Alternatively, verticalstructures 2104 can be formed from individual pieces of elastic cordtied to each of rings 2102. Each of vertical support structures 2106includes two ring engaging features 2114 and a columnar structure 2116disposed therebetween. In this example, ring engaging features 2114 areoutward facing hooks that engage both the bottom and top ones of rings2102. Each of columnar structures 2116 is a rigid column structureformed from some suitable material such as, for example, plastic, metal,fiberglass, wood, etc. Collapsible plant support structure 2100 can bebroken down for storage simply by disengaging rings 2102 from ringengaging features 2114. With ring engaging features 2114 disengaged,rings 1202 collapse down into a small form factor for storage, shipping,etc.

The description of particular embodiments of the present invention isnow complete. Many of the described features may be substituted, alteredor omitted without departing from the scope of the invention. Forexample, alternate fluid network layouts (e.g., larger arrays of plantreceptacle receiving elements), may be substituted for the 2×2 array1800. As another example, the various described coils can have variousdifferent characteristics such as number of helical turns, shapes,spring force coefficient, etc. As yet another example, most embodimentsare shown with 4 vertical support structures and 4 vertical structures.However, a greater or lesser number of vertical support structuresand/or vertical structures can be used. These and other deviations fromthe particular embodiments shown will be apparent to those skilled inthe art, particularly in view of the foregoing disclosure.

We claim:
 1. A collapsible plant support structure comprising: acollapsible coil having an axis, a bottom end and a top end; a bottomcoupled to said bottom end of said collapsible coil and adapted tosupport said collapsible plant support on a flat horizontal surface withsaid axis perpendicular to said flat horizontal surface; and a pluralityof retainers coupled to said bottom end of said collapsible coil andsaid top end of said collapsible coil, said retainers adapted torestrain said collapsible coil in a deployed position.
 2. Thecollapsible plant support structure of claim 1, said plurality ofretainers includes a plurality of vertical support structures.
 3. Thecollapsible plant support structure of claim 2, wherein said verticalsupport structures remain entirely at or above said bottom of saidcollapsible plant support structure.
 4. The collapsible plant supportstructure of claim 3, wherein portions of said vertical supportstructures form at least a portion of said bottom of said collapsibleplant support structure.
 5. The collapsible plant support structure ofclaim 2, wherein each of said plurality of said support structuresincludes: a first coil engaging feature adapted to engage a portion ofsaid collapsible coil at said top end of said collapsible coil; a secondcoil engaging feature adapted to engage a portion of said collapsiblecoil at said bottom end of said collapsible coil; and a rigid membercoupled between said first coil engaging feature and said second coilengaging feature.
 6. The collapsible plant support structure of claim 5,wherein: said collapsible coil tends to expand beyond said deployedposition; and said support structures restrain said collapsible coilfrom expansion beyond said deployed position.
 7. The collapsible plantsupport structure of claim 5, wherein: said collapsible coil tends tocontract from said deployed position; and said support structuresrestrain said collapsible coil from contracting from said deployedposition.
 8. The collapsible plant support structure of claim 5, whereinsaid rigid members include a plurality of intermediate coil engagingfeatures adapted to engage turns of said collapsible coil between saidtop end of said collapsible coil and said bottom of said collapsiblecoil.
 9. The collapsible plant support structure of claim 2, furthercomprising: a first set of vertical support structure engaging devicescoupled to said top end of said collapsible coil and being adapted toengage top ends of said vertical support structures; and a second set ofvertical support structure engaging features coupled to said bottom endof said collapsible coil and being adapted to engage bottom ends of saidvertical support structures.
 10. The collapsible plant support structureof claim 1, wherein said plurality of retainers includes a plurality offlexible elements coupled between said bottom end of said collapsiblecoil and said top end of said collapsible coil.
 11. The collapsibleplant support structure of claim 10, wherein: said collapsible coilincludes a plurality of helical turns; and at least one of said flexibleelements is coupled to said bottom end of said collapsible coil, saidtop end of said collapsible coil, and every helical turn therebetween.12. The collapsible plant support structure of claim 10, wherein each ofsaid plurality of flexible elements is a cord.
 13. The collapsible plantsupport structure of claim 1, wherein said bottom end of saidcollapsible coil forms at least a portion of said bottom of saidcollapsible plant support structure.
 14. The collapsible plant supportstructure of claim 1, wherein the inner diameter of said collapsiblecoil is greater than 12 inches.
 15. The collapsible plant supportstructure of claim 1, wherein said plurality of retainers includes: aplurality of vertical support structures; and a plurality of flexibleelements coupled between said bottom end of said collapsible coil andsaid top end of said collapsible coil.
 16. The collapsible plant supportstructure of claim 1, wherein said bottom of said collapsible plantsupport structure includes a base coupled to said bottom end of saidcollapsible coil.
 17. The collapsible plant support structure of claim16, wherein said base is a rigid structure, whereby said collapsibleplant support is stabilized by weight placed on said base.
 18. Thecollapsible plant support structure of claim 17, wherein said baseincludes a plate.
 19. The collapsible plant support structure of claim17, wherein said base includes a bar.
 20. The collapsible plant supportstructure of claim 16, wherein said base is a flexible structure coupledacross said bottom end of said collapsible coil, whereby saidcollapsible plant support is stabilized by weight placed on said base.21. The collapsible plant support structure of claim 16, wherein saidbase includes a pan.
 22. A collapsible plant support structurecomprising: a collapsible coil having an axis, a bottom end and a topend; a bottom coupled to said bottom end of said collapsible coil andadapted to support said collapsible plant support on a flat horizontalsurface with said axis perpendicular to said flat horizontal surface; aplurality of vertical flexible elements coupled to said bottom end ofsaid collapsible coil, said top end of said collapsible coil, andintermediate turns of said collapsible coil; a plurality of verticalsupports adapted to restrain said collapsible coil in a deployedposition; and a plurality of coil engaging features adapted to couplesaid vertical supports to said collapsible coil.
 23. The collapsibleplant support structure of claim 22, further comprising a flexiblecovering molded around said collapsible coil.
 24. The collapsible plantsupport structure of claim 22, wherein said vertical flexible elementsare molded onto said collapsible coil.
 25. The collapsible plant supportstructure of claim 22, wherein said coil engaging features are moldedonto said collapsible coil.
 26. A method of manufacturing a collapsibleplant support structure comprising: providing a collapsible coil havingan axis, a bottom end and a top end; molding a plurality of verticalflexible elements to said bottom end of said collapsible coil, said topend of said collapsible coil, and intermediate turns of said collapsiblecoil; providing a plurality of vertical supports adapted to restrainsaid collapsible coil in a deployed position; and molding a plurality ofcoil engaging features onto said collapsible coil, said coil engagingfeatures being adapted to couple said vertical supports to saidcollapsible coil.